Non-destructive testing of low-energy impact in CFRP laminates and interior defects in honeycomb sandwich using scanning pulsed eddy current
Non-destructive testing of low-energy impact in CFRP laminates and interior defects in honeycomb sandwich using scanning pulsed eddy current
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DOI：
10.1016/j.compositesb.2013.12.005
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发表时间：
2014-03-01
影响因子：
13.1
通讯作者：
Chen, Dixiang
中科院分区：
文献类型：
--
作者：
He, Yunze;Tian, GuiYun;Chen, Dixiang
随着复合材料和蜂窝夹芯板在工业领域应用的日益广泛，无损检测(NDT)技术的发展越来越受到人们的关注。本文以扫描脉冲涡流(PEC)为研究对象，利用代表磁场强度和电导率的两个特征来表征碳纤维增强塑料(CFRP)层合板和蜂窝夹层板中不同类型的缺陷。实验结果表明，该方法可以有效地检测和评价4J~12J的低能冲击、导电和非导电刀片缺陷。通过与闪光热成像和剪切成像的对比研究，验证了扫描PEC的有效性，并阐述了扫描PEC的优势。(C)2013爱思唯尔有限公司。保留所有权利。
With the growing interest to use composite materials and honeycomb sandwich panels in industrial fields, much attention is devoted to the development of non-destructive testing (NDT) techniques for the detection and evaluation of defects. In this work, scanning pulsed eddy current (PEC) was investigated and two features, representing the magnetic field intensity and conductivity, were used to characterise the different types of defects in carbon fibre reinforced plastics (CFRP) laminates and honeycomb sandwich panels. The experimental results show that the low energy impact from 4 J to 12 J, conductive and non-conductive insert defects can be effectively detected and evaluated using the proposed methods. The effectiveness was verified and the advantages of scanning PEC were addressed through comparative studies with flash thermography and shearography. (C) 2013 Elsevier Ltd. All rights reserved.